Yesterday, Facebook tweaked its Platform Policies, and while some of the changes are subtle, there's one which is very welcome: from now, the concept of offering access to apps or content in return for Likes is banned.

Facebook has implemented countermeasures to purge fake, forged, hacked or otherwise unsavory 'Likes' from its pages, resulting in the sudden departure of several hundred thousand of Zynga's several hundred million fans.